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公开(公告)号：US3788887A
公开(公告)日：1974-01-29
申请号：US3788887D
申请日：1971-07-09
Applicant: BAYER AG
IPC: C08J9/28 , D04H1/4258 , D04H1/435 , D04H1/4382 , D04H1/587 , D04H1/64 , D04H1/68 , D06N3/14 , C09D5/00
CPC classification number: D04H1/4258 , C08J9/28 , C08J2375/04 , D04H1/435 , D04H1/4382 , D04H1/587 , D04H1/64 , D04H1/68 , D06N3/14
Abstract: BONDED FIBER FLEECES ARE PROVIDED AND A METHOD FOR THEIIIR PRODUCTION WHICH COMPRISES PREPARING A REACTIVE POLYADDITION REACTION MIXTURE FROM AN ORGANIC POLYISOCYANATE, AND AN ORGANIC COMPOUND CONSISTING AT LEAST TWO HYDROXYL OR AMINO HYDROGEN ATOMS CAPABLE OF REACTING WITH NCO GROUPS AS STARTING COMPONENTS IN AN INERT LIQUID ORGANIC SOLVENT FOR THE STARTING COMPONENTS WHICH BOILS AT A TEMPERATURE OF BELOW ABOUT 250*C. BUT WHICH IS A NON-SOLVENT FOR THE POLYADDITION PRODUCT, WHICH SOLVENT HAS NO SIGNIFICANT SWELLING EFFECT ON A HOMOGENEOUS, NON-POROUS FILM OF THE POLYADDITION PRODUCT AND IS PRESENT IN A QUANTITY WHICH DOES NOT EXCEED THAT WHICH THE POLYADDITION PRODUCT IS CAPABLE OF ENCLOSING AS AN INTERNAL PHASE, APPLYING THE REACTIVE MIXTURE TO AN UNBONDED FLEECE IN A QUANTITY SUFFICIENT TO YIELD FROM 10 TO 500% BY WEIGHT BASED ON THE WEIGHT OF THE FLEECE OF THE POLYADDITION PRODUCT AND TERMINATING THE POLYADDITION REACTION AT A TEMPERATURE OF FROM ABOUT 20* TO ABOUT 200*C. WHILE EVAPORATING THE SOLVENT.
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公开(公告)号：BR7705457A
公开(公告)日：1978-05-02
申请号：BR7705457
申请日：1977-08-17
Applicant: BAYER AG
Abstract: The present invention relates to a process for the production of polyurethane ureas from a prepolymer which contains isocyanate groups and a mixture of hardeners containing amino groups, in the presence of water, and optionally in the presence of solvents, characterized in that the mixture of hardeners comprises compounds corresponding to the following general formulae:
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Patent Agency Ranking
公开(公告)号：CA928593A
公开(公告)日：1973-06-19
申请号：CA76953
申请日：1970-03-10
Applicant: BAYER AG
Inventor： WILSCHENSKY H , WEBER K , SALAMON M , VON LANGENTHAL W , KUBITZEK H
Abstract: 1300813 Fleece of composite fibres FARBENFABRIKEN BAYER AG 13 March 1970 [15 March 1969] 12124/70 Heading D1R A bonded non-woven fleece or mat consists of or contains synthetic fibres, or mixtures of synthetic and natural fibres, which contains at least 30% by weight of two component fibres having a sheath/core structure, the core component being a polyamide-6 and the sheath component being a copolyamide of amiriocaproic acid and aminoundecanoic acid, the sheath component having a softening range at least 20‹C below that of the core component. The fleece is produced by heating an unbonded fleece at a temperature in the softening range of the sheath component which becomes plastic and acts as a binder while the core is unchanged. The fleece may be formed by a carding machine. The two-component fibres may be mixed with fibres having a crimp. An example is given of them mixed with fibres of carbonised wool. Heating may be effected by calendering at a temperature between 100 and 150‹C. The fleece may be stitched before being autogeneously bonded.
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公开(公告)号：SE324347B
公开(公告)日：1970-06-01
申请号：SE1256765
申请日：1965-09-28
Applicant: BAYER AG
IPC: D06M15/333 , C08F8/12 , C09J123/08 , C09J129/04 , D01F6/30 , D06M17/06 , D06M17/00
Abstract: Copolymers of ethylene and vinyl acetate are prepared which contain vinyl acetate and ethylene in a molar ratio of 1:4 to 1:50 and are then saponified to a degree of hydrolysis of 50-100%. Forms specified are powders, threads, fibres, pulverulent grains, woven fabrics and fleeces and are used for heat-sealing textile sheet structures.
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公开(公告)号：BR7808040A
公开(公告)日：1979-08-07
申请号：BR7808040
申请日：1978-12-07
Applicant: BAYER AG , MOBAY CHEMICAL CORP
Inventor： PROCHASKA H , WEBER K , WALTER K
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